MY126665A - Optical lens system comprising two more than half-spherical lenses. - Google Patents
Optical lens system comprising two more than half-spherical lenses.Info
- Publication number
- MY126665A MY126665A MYPI20011387A MYPI20011387A MY126665A MY 126665 A MY126665 A MY 126665A MY PI20011387 A MYPI20011387 A MY PI20011387A MY PI20011387 A MYPI20011387 A MY PI20011387A MY 126665 A MY126665 A MY 126665A
- Authority
- MY
- Malaysia
- Prior art keywords
- lens
- objective lens
- diameter
- holder
- accurate
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1376—Collimator lenses
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
- G11B11/10543—Heads for reproducing using optical beam of radiation
- G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
- G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
- Prostheses (AREA)
Abstract
THE INVENTION RELATES TO AN OPTICAL LENS SYSTEM (39) WHICH IS SUITABLE FOR USE IN AN OPTICAL SCANNING DEVICE (15) FOR AN OPTICAL DISC PLAYER. THE LENS SYSTEM (39) COMPRISES A FIRST LENS OR OBJECTIVE LENS (45) AND A SECOND LENS OR AUXILIARY LENS (47) WHICH ARE MOUNTED IN FIXED POSITIONS IN A LENS HOLDER (61). THE OBJECTIVE LENS COMPRISES MORE THAN ONE HALF OF A FIRST SPHERICAL LENS BODY (67) HAVING A FIRST DIAMETER (D1), AND THE AUXILIARY LENS COMPRISES MORE THAN ONE HALF OF A SECOND SPHERICAL LENS BODY (69) HAVING A SECOND DIAMETER (D2) SMALLER THAN THE FIRST DIAMETER. THE OBJECTIVE LENS AND THE AUXILIARY LENS ARE SURROUNDED BY, RESPECTIVELY, A FIRST CIRCULAR CYLINDRICAL INNER WALL (83) AND A SECOND CIRCULAR CYLINDRICAL INNER WALL (85) OF THE LENS HOLDER HAVING A DIAMETER WHICH IS SUBSTANTIALLY EQUAL TO THE FIRST AND THE SECOND DIAMETER, RESPECTIVELY. SAID INNER WALLS CAN BE PROVIDED IN THE LENS HOLDER IN VERY ACCURATE COAXIAL POSITIONS BY MEANS OF CONVENTIONAL TOOLS. IN THIS MANNER, A VERY ACCURATE CENTRATION OF THE OBJECTIVE LENS AND THE AUXILIARY LENS IN THE LENS HOLDER IS OBTAINED IN A COMPARATIVELY SIMPLE MANNER. IN A PREFERRED EMBODIMENT, THE LENS HOLDER IS FURTHER PROVIDED WITH AN INTERNAL NNULAR ABUTTING SURFACE (95) FOR A FLAT BOUNDARY SURFACE (71) OF THE OBJECTIVE LENS. SAID BOUNDARY SURFACE DEFINES THE POSITION OF AN OPTICAL AXIS (73) OF THE OBJECTIVE LENS BECAUSE SAID OPTICAL AXIS IS DIRECTED PERPENDICULARLY TO THE BOUNDARY SURFACE. THE ABUTTING SURFACE CAN BE PROVIDED IN AN ACCURATE PERPENDICULAR POSITION RELATIVE TO THE CENTER LINE (87) OF THE LENS HOLDER BY MEANS OF CONVENTIONAL TOOLS, SO THAT THE OPTICAL AXIS OF THE OBJECTIVE LENS CAN BE SIMPLY BROUGHT IN AN ACCURATE POSITION PARALLEL TO THE CENTER LINE (87) OF THE LENS HOLDER BY POSITIONING THE BOUNDARY SURFACE OF THE OBJECTIVE LENS AGAINST SAID ABUTTING SURFACE.(FIG 4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00201098 | 2000-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
MY126665A true MY126665A (en) | 2006-10-31 |
Family
ID=8171258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI20011387A MY126665A (en) | 2000-03-27 | 2001-03-23 | Optical lens system comprising two more than half-spherical lenses. |
Country Status (11)
Country | Link |
---|---|
US (1) | US6487026B2 (en) |
EP (1) | EP1185980B1 (en) |
JP (1) | JP2003529107A (en) |
KR (1) | KR100762805B1 (en) |
CN (1) | CN1174397C (en) |
AT (1) | ATE411597T1 (en) |
BR (1) | BR0105378A (en) |
DE (1) | DE60136141D1 (en) |
MY (1) | MY126665A (en) |
TW (1) | TWI230936B (en) |
WO (1) | WO2001073776A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001073776A1 (en) * | 2000-03-27 | 2001-10-04 | Koninklijke Philips Electronics N.V. | Optical lens system comprising two more than half-spherical lenses |
KR100934924B1 (en) * | 2001-04-25 | 2010-01-06 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Scanning device including plastic high-numerical aperture objective |
EP1386315B1 (en) * | 2001-04-25 | 2006-08-16 | Koninklijke Philips Electronics N.V. | Scanning device including a partly plastic high-na objective system |
JP2003021770A (en) * | 2001-07-09 | 2003-01-24 | Sony Corp | Objective lens, objective lens manufacturing method, optical pickup device and recording and reproducing device |
JP2003066300A (en) * | 2001-08-29 | 2003-03-05 | Sony Corp | Device for manufacturing objective lens and method for manufacturing objective lens |
DE60314247T2 (en) * | 2002-04-09 | 2008-01-31 | Koninklijke Philips Electronics N.V. | COMPOSITE LENSES WITH TURNING MIRRORS |
CN1299283C (en) * | 2002-08-05 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | Scanning device including an objective lens formed of two materials |
US6876503B1 (en) | 2003-10-28 | 2005-04-05 | Contour Fabricators, Inc. | Microscope drape lens protective cover assembly |
JP2006085837A (en) * | 2004-09-16 | 2006-03-30 | Konica Minolta Opto Inc | Objective lens unit and optical pickup device using the same |
JP4050271B2 (en) * | 2004-12-07 | 2008-02-20 | シャープ株式会社 | Objective lens holder, objective lens driving apparatus including the same, and optical disc recording / reproducing apparatus |
JP2006285031A (en) * | 2005-04-01 | 2006-10-19 | Sony Corp | Variable focus lens, optical apparatus using the same, manufacturing method of variable focus lens |
US9372321B2 (en) * | 2011-09-30 | 2016-06-21 | Konica Minolta, Inc. | Optical element, holding structure therefor, and optical device |
CN102889549B (en) * | 2012-09-12 | 2014-01-08 | 广东宏泰照明科技有限公司 | Gradually-changed trapezoidal light spot lens |
JP1573246S (en) * | 2015-12-11 | 2017-04-03 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0450560B1 (en) * | 1990-04-03 | 1998-07-22 | Sumitomo Electric Industries, Ltd. | An optical device |
US6115347A (en) * | 1996-02-12 | 2000-09-05 | Sony Corporation | Optical pick-up device, optical recording/reproducing apparatus and objective lens |
JPH1069648A (en) * | 1996-08-28 | 1998-03-10 | Sony Corp | Optical pickup device and adjusting method thereof |
JP3787925B2 (en) * | 1996-11-14 | 2006-06-21 | ソニー株式会社 | Objective lens device and recording / reproducing device |
JP3608333B2 (en) | 1997-03-06 | 2005-01-12 | ソニー株式会社 | Optical pickup and method of assembling objective lens for optical pickup |
JPH11259894A (en) * | 1998-03-06 | 1999-09-24 | Ricoh Co Ltd | Optical pickup head |
EP0990232B1 (en) * | 1998-04-17 | 2005-07-27 | Koninklijke Philips Electronics N.V. | Optical scanning device comprising a lens system with a compact actuator |
EP1042751A1 (en) * | 1998-08-07 | 2000-10-11 | Koninklijke Philips Electronics N.V. | Optical scanning device and optical apparatus for reading and/or writing information in an information plane provided with such a device |
JP2000076695A (en) * | 1998-09-03 | 2000-03-14 | Tdk Corp | Optical head and manufacture of the same |
US6307689B1 (en) * | 1998-10-21 | 2001-10-23 | Sony Corporation | Optical head and drive device for optical recording medium |
JP4269471B2 (en) * | 2000-02-21 | 2009-05-27 | ソニー株式会社 | Optical recording medium, optical pickup and optical recording / reproducing apparatus |
WO2001073776A1 (en) * | 2000-03-27 | 2001-10-04 | Koninklijke Philips Electronics N.V. | Optical lens system comprising two more than half-spherical lenses |
-
2001
- 2001-02-26 WO PCT/EP2001/002156 patent/WO2001073776A1/en active Application Filing
- 2001-02-26 BR BR0105378-7A patent/BR0105378A/en not_active IP Right Cessation
- 2001-02-26 DE DE60136141T patent/DE60136141D1/en not_active Expired - Fee Related
- 2001-02-26 EP EP01917031A patent/EP1185980B1/en not_active Expired - Lifetime
- 2001-02-26 CN CNB018013643A patent/CN1174397C/en not_active Expired - Fee Related
- 2001-02-26 JP JP2001571409A patent/JP2003529107A/en active Pending
- 2001-02-26 AT AT01917031T patent/ATE411597T1/en not_active IP Right Cessation
- 2001-02-26 KR KR1020017015095A patent/KR100762805B1/en not_active IP Right Cessation
- 2001-03-22 US US09/814,655 patent/US6487026B2/en not_active Expired - Fee Related
- 2001-03-23 MY MYPI20011387A patent/MY126665A/en unknown
- 2001-04-09 TW TW090108454A patent/TWI230936B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1381045A (en) | 2002-11-20 |
ATE411597T1 (en) | 2008-10-15 |
KR100762805B1 (en) | 2007-10-02 |
US20010038499A1 (en) | 2001-11-08 |
TWI230936B (en) | 2005-04-11 |
BR0105378A (en) | 2002-03-05 |
KR20020027325A (en) | 2002-04-13 |
EP1185980B1 (en) | 2008-10-15 |
US6487026B2 (en) | 2002-11-26 |
JP2003529107A (en) | 2003-09-30 |
DE60136141D1 (en) | 2008-11-27 |
WO2001073776A1 (en) | 2001-10-04 |
EP1185980A1 (en) | 2002-03-13 |
CN1174397C (en) | 2004-11-03 |
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